mc908jl16 Freescale Semiconductor, Inc, mc908jl16 Datasheet - Page 180

• Manufacturer Part Number: mc908jl16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Development Support
16.2.2 Flag Protection During Break Interrupts
The system integration module (SIM) controls whether or not module status bits can be cleared during
the break state. The BCFE bit in the break flag control register (BFCR) enables software to clear status
bits during the break state. (See
Interrupts subsection for each module.)
180
Addr.
$FE0C
$FE0D
$FE0E
$FE00
$FE03
Note: Writing a logic 0 clears SBSW.
Break Flag Control Register
Break Status and Control
Register Name
Break Status Register
Break Address High
Break Address low
IAB[15:0]
(BRKSCR)
Register
Register
Register
(BRKH)
(BFCR)
(BRKL)
(BSR)
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Figure 16-1. Break Module Block Diagram
Figure 16-2. Break I/O Register Summary
IAB[15:8]
IAB[7:0]
16.2.6.4 Break Flag Control Register (BFCR)
BREAK ADDRESS REGISTER HIGH
BREAK ADDRESS REGISTER LOW
BRKE
BCFE
Bit15
Bit 7
MC68HC908JL16 Data Sheet, Rev. 1.1
Bit7
R
0
0
0
0
8-BIT COMPARATOR
8-BIT COMPARATOR
= Unimplemented
BRKA
Bit14
Bit6
R
R
6
0
0
0
Bit13
Bit5
R
R
5
0
0
0
0
Bit12
Bit4
R
R
R
4
0
0
0
0
CONTROL
= Reserved
Bit11
Bit3
R
R
3
0
0
0
0
and see the Break
BKPT
(TO SIM)
Bit10
Bit2
R
R
2
0
0
0
0
Freescale Semiconductor
See note
SBSW
Bit9
Bit1
R
1
0
0
0
0
0
Bit 0
Bit8
Bit0
R
R
0
0
0
0